Suppose I have a space that requires 2 tons to cool (about 20,000 BTU), but I notice high tonnage AC units cost more to buy and to install. So I’m wondering is there any advantage to having one large AC unit or 2 smaller AC unit that equals the same tonnage?
I found a place that will install a .8 ton AC unit (used) for 6500 including installation, ductless unit obviously. They’re old but I don’t see the reason to spend 20,000 NT or more on a .8 ton inverter AC unit anyways when it seems (to me anyways) inverter only really works if you’re installing a 3 ton unit in a tiny little space (as they can reduce their cooling capacity at will therefore save electricity). I just figure I can install 2 such units in the larger main workspace and I can turn them both on if one isn’t cutting it.
I’m not even sure why it makes any sense to throw old units away that uses R22 when the unit is perfectly good and the newer refrigerants not only cost more, but require more expensive/thicker plumbing to work. I mean I don’t expect to say save more than 200nt a month using say the expensive inverter AC vs. an old one that works just as well (assuming they are properly sized for the space to be cooled).
Is R22 really that bad and inefficient?